Hanayama cast puzzles are the world's finest brain teasers. Can you take the pieces apart, then put them back together again? Hanayama cast metal brain teasers have 6 levels of difficulty, and each puzzle is Mensa-rated. Level 6 puzzles are considered very difficult by most puzzlers. HANAYAMA CHALLENGE: Hanayama cast puzzles are the world's finest brain teasers. Can you take the pieces apart, then put them back together again? DIAMOND: This puzzle consists of two pieces. This diamond may not be forever, but discovering its secrets will certainly keep a puzzler busy! QUALITY CONSTRUCTION: Sleek, high-quality cast metal materials ensure each piece endures years of vigorous play. SKILL LEVEL 1: Level 1 puzzles are considered easy by most puzzle enthusiasts. GREAT GIFT IDEA: Take on the challenge yourself or gift this intricate brainteaser to the puzzle enthusiast in your life!